Needle-feed chain-stitch sewing-machine.



No. 69|,3|l. Patented Jan. l4, I902, H. J. HANCOCK. NEEDLE FEED CHAINSTITCH SEWING MACHINE.

(Application filed July :3, 1901. (No Model.)

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UNITED STATES ATENT OFFICE.

' HENRY J. HANCOCK, OF NEW YORK, N. Y., ASSIGNOR TOGEORGE T. BATOHELOR,OF SOUTH ORANGE, NEW JERSEY, AND SAMUEL STEN- SON, OF SEACLIFF, NEWYORK.

NEEDLE-FEED CHAIN-STITCH SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 691,311, dated January14, 1902.

Application filed July 13,1901. Serial No. 68,218. (No model.)

following is a specification.

My present invention is designed as an im provement on the machinecovered by the Letters Patent granted to me on the 2d day of July, 1901,No. 677,740; and the object of my present invention is, first, tosimplify the construction of the presser-foot; second, to simplify theconstruction of the guide or fulcrum plate, and, third, to provide abetter spring for the Presser-foot. I attain these objects by themechanism illustrated inthe accompanying drawings, in which- Figure 1 isa side elevation of a sewingmachine constructed according to my presentinvention, a part being broken away. Fig. 2 is a top plan view thereof,and Fig. 3 is a front view of apart of the machine on alarger scale.

In the accompanying drawings like parts are indicated by the samenumerals of reference in each of the views, and in the practice ofmyinvention I provide the presserfoot 5 with a perpendicular standard 6,integral with the cross-piece 7, which is pivoted to the frame at 8, anda handle 9 is provided to operate said cross-piece and presser-foot. Onthe opposite side of the machine an angular extension 10 of thecross-piece 7 is provided, between which and the frame is mounted acompression-spring 11, working on a pin 12 in said extension, and theother end is seated in a socket 13, formed in the side of the frame, asclearly shown in Fig. 3. By reason of this construction itis notnecessary to mount a pin or place a stud on the side of the frame tohold the spring in position, and more space is created for the spring,so that a longer and better spring can be used, and the extension willnot be prevented coming close to the frame when the presser-foot israised.

The guide or fulcrum plate 14 is provided with a centrallongitudinaljslot 15, through 7 of the presser-foot, and the metalremoved to form said slot is left attached at the lower end thereof andis bent outward at right angles to the plate 14, as shown at 18, and isprovided with an eye 19, through which the needle 20 passes, the upperend of the needle being mounted on the crank 21, and the throw of theneedle is adjusted by moving the plate 14; up and down on the screw 16,as will be readily understood. The plate 14; is provided with wings 22,which engage the standard 6 of the presser-foot, which acts as a guidefor the lower end of said plate. By this construction I get a very cheapand efficient fulcrumplate, and the adjustment of the same is always ina vertical plane.

By the construction of presser-foot the crosspicce is considerably abovethe presser-foot, which is curved upward at both ends and makes a veryneat and efficient foot.

In this class of machines the shaft 23 is rotated, which causes thepoint of the needle 20 to describe an ellipse and feeds the clothforward underneath the presser foot. A hook-needle is used, and thethread is fed to th'eneedle by the spring 24 in a manner described in myother patent. As this spring projects across the path of the needle, theneedle would be caught andbroken if the shaft were to be rotatedbackward. To prevent this, I have provided a ratchet-wheel which a screw16 is passed into the cross-piece 25, which is mounted on the shaft 23,and I at 27 to the frame and engages the ratchetwheel 25, therebypreventing the rotation of th'eshaft 23 in the wrong direction. By usinga gravity-pawl constructed in this manner scarcely any noise is made,which is not the case if a spring-pawl is used, and the pawl can bethrown out of engagement when required.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A needle-feed for a chain-stitch sewingmachine, the same comprising aneedle, a presser foot pivoted to the frame of the machine and providedwith a vertical standard,

and a plate carried by said presser-foot and serving as a fulcrum forsaid needle, and provided 'With wings engaging said standard, as and forthe purpose set forth.

2. The combination with a chain-stitch sewing-machine of a presser-footpivoted to the frame of the machine and having an angular extension, theframe of the machine being provided with a socket back of saidextension, and a compression-spring mounted in said socket, and engagingsaid extension, as and for the purpose set forth.

' In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

HENRY J. HAN COCK.

Witnesses:

S. Y. MONAIR, GEO. T. BATCHELOR.

